
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html,body{
  height: 100%;
  width: 100%;
}
li {
  list-style: none;
}
a {
  text-decoration: none;
}
.row{
  width: 1000px;
}
.autorow{
  width: 100%;
}
.autoheight{
  height: 100%;
}
.center{
  text-align: center;
}
.automargin{
  margin: 0 auto;
}
.flex{
  display: flex;
}
.all-flex {
  display: flex;
  align-items: center;
}
.flex-c{
  flex-direction: column;
}
.flex-w{
  flex-wrap: wrap;
}
.jf-center{
  justify-content: center;
}
.jf-between{
  justify-content: space-between;
}
.jf-evenly{
  justify-content: space-evenly;
}
img{
  display: block;
  width: 100%;
}
.common-gray{
  color: #6e6e6e;
}
.common-green{
  color: #1aac4a;
}
.common-gray2{
  color: #343434;
}
.common-ff{
  color: #ffffff;
}
.fs28{
  font-size: 28px;
}
.fs24{
  font-size: 24px;
}
.fs18{
  font-size: 18px;
}
.fs14{
  font-size: 14px;
}
.fs12{
  font-size: 12px;
}
.mb30{
  margin-bottom: 30px;
}




header{
  background-color: #ccc;
}
#header {
  height: 75px;
  align-items: center;
}
.header-nav {
  width: 700px;
  height: 100%;
}
.header-nav .nav-items {
  width: 100%;
  height: 100%;
}
.nav-item {
  position: relative;
}
.nav-item a {
  display: block;
  width: 100px;
  height: 100%;
  line-height: 75px;
  text-align: center;
  color: #000;
  font-size: 16px;
}
.nav-item a:hover {
  color: #0066cb;
}
.nav-item:hover::after {
  display: block;
}
.nav-item::after {
  position: absolute;
  display: none;
  content: '';
  top: 0;
  width: 100px;
  height: 5px;
  background-color: #0066cb;
}
.nav-item::before {
  position: absolute;
  content: '';
  top: 50%;
  right: 0;
  transform: translate(0, -50%);
  width: 1px;
  height: 15px;
  background-color: #ccc;
}
.nav-item:last-child::before {
  display: none;
}

.banner{
  position: relative;
}
.banner-btn{
  position: absolute;
  bottom: 0;
  height: 35px;
  background-color: rgba(000, 000, 000, .5);
}
.banner-btn div{
  width: 10px;
  height: 10px;
  background-color: #fff;
  border-radius: 50%;
  margin: 0 6px;
}